Wow! OpenID appears to be making serious headway.
"Brian Ellin":http://brianellin.com/blog/2006/06/12/heading-to-boston/ mentions that Wikipedia are going to use OpenID as their single-sign-on solution! On top of this news, he also mentions that "Verisign have launched an OpenID server":http://pip.verisignlabs.com/.
I decided recently (before I heard about wikipedia) to integrate "msgpad":http://msgpad.com with OpenID. Being able to "tag" someone regardless of domain is an important part of the Internet evolution. Domain based identity is so dot com 2000. Internet based identity is now.